話はなしの腰こしを折おる

expression, godan verb (-ru)

interrupt; butt in; cut someone off

Idiomatic expression for breaking the flow of a conversation, often by changing the subject or interjecting at an awkward moment. The image is of 'breaking the back' of the talk.

• 彼かれが話はなしているときに、話はなしの腰こしを折おらないでください。

  Please don't interrupt him while he's talking.

• 大だい事じな話はなしをしていたのに、彼かの女じょに話はなしの腰こしを折おられた。

  I was having an important conversation, but she cut me off.